My 2-yo hasn't been eating properly for the past 3 weeks. Her usual diet includes mashed idli/dosa with sambar, pressure cooked dal rice with carrot/beans, curd rice, upma, ragi kanji, and Cerelac. She poops only once in 2-3 days. She looks lean and weighs only 9.1 kg. But she is very active and plays well. For the past 3 weeks, we are finding it difficult to make her eat. She has turned too fussy. Eats just half of her meal, but drinks milk normally. She's not even wanting Cerelac, which she loves to eat. I don't know what to do. Please guide me.